package com.atguigu.gulimall.order.listener;

import com.alipay.api.AlipayApiException;
import com.alipay.api.internal.util.AlipaySignature;
import com.atguigu.gulimall.order.config.AlipayTemplate;
import com.atguigu.gulimall.order.service.OrderService;
import com.atguigu.gulimall.order.vo.PayAsyncVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

@RestController
@Slf4j
public class OrderPayedListener {

    @Autowired
    OrderService orderService;

    @Autowired
    AlipayTemplate alipayTemplate;

    @PostMapping("/payed/notify")
    public String handleAlipayed(PayAsyncVo vo,HttpServletRequest request) throws UnsupportedEncodingException, AlipayApiException {
        //只要我们收到了支付宝给我们异步的通知，告诉我们订单支付成功。返回success，支付宝就再也不通知
        Map<String, String[]> map = request.getParameterMap();
        log.info("支付宝通知到位了...数据{}",map);

        Map<String,String> params = new HashMap<>();
        Iterator<String> iterator = map.keySet().iterator();
        while (iterator.hasNext()){
            String name = iterator.next();
            String[] values = map.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i==values.length-1)?valueStr+values[i] : valueStr+values[i]+",";
            }
            //乱码解决，这段代码在出现乱码时使用
//            valueStr = new String(valueStr.getBytes("ISO-8859-1"),"utf-8");
            params.put(name,valueStr);
        }
        boolean signVerified = AlipaySignature.rsaCheckV1(params,alipayTemplate.getAlipay_public_key(),alipayTemplate.getCharset(),alipayTemplate.getSign_type());

        if(signVerified){
            log.info("签名验证成功");
            String result = orderService.handlePayResult(vo);
            return result;
        }else {
            log.info("签名验证失败");
            return "error";
        }
    }

}
